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P0102 2004 Infiniti G35 Code - Mass or Volume Air Flow Circuit Low Input

Quick Answer

The P0102 diagnostic trouble code (DTC) for a 2004 Infiniti G35 indicates a problem with the Mass or Volume Air Flow Circuit Low Input. Common causes include Faulty MAF sensor, Dirty or clogged air filter, Vacuum leak in the intake system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0102 2004 Infiniti G35 indicates Mass or Volume Air Flow Circuit Low Input.
Common causes
Common causes include Faulty MAF sensor, Dirty or clogged air filter, Vacuum leak in the intake system.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0102 2004 Infiniti G35 Description

The P0102 diagnostic trouble code (DTC) for a 2004 Infiniti G35 indicates a problem with the Mass or Volume Air Flow Circuit Low Input. This code is triggered when the Engine Control Module (ECM) detects that the signal from the mass airflow sensor (MAF) is lower than expected. The MAF sensor measures the amount of air entering the engine, which is crucial for the ECM to calculate the correct air-fuel mixture for combustion. A low input from the MAF sensor can lead to an incorrect fuel mixture, affecting engine performance and emissions.

OBDII Code P0102 2004 Infiniti G35 - Mass or Volume Air Flow Circuit Low Input
P0102 2004 Infiniti G35 Code - Mass or Volume Air Flow Circuit Low Input

Common Causes of P0102 2004 Infiniti G35

  1. Faulty MAF sensor
  2. Dirty or clogged air filter
  3. Vacuum leak in the intake system
  4. Wiring issues in the MAF sensor circuit
  5. Faulty ECM

Symptoms of P0102 2004 Infiniti G35

  1. Reduced engine power
  2. Poor fuel economy
  3. Rough idling or stalling
  4. Hesitation or surging during acceleration
  5. Illuminated check engine light

How to Fix P0102 2004 Infiniti G35

  1. Begin by inspecting the air filter and replacing it if dirty or clogged.
  2. Check for any visible damage or leaks in the intake system, including hoses and connections.
  3. Test the MAF sensor using a multimeter to determine if it is functioning properly.
  4. Inspect the wiring and connectors in the MAF sensor circuit for any damage or corrosion.
  5. If the MAF sensor is found to be faulty, replace it with a new one and reset the ECM to clear the code.

Cost to Fix P0102 2004 Infiniti G35

The typical repair costs for addressing a P0102 code on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. Replacing a faulty MAF sensor can cost between $100 and $400, while cleaning or replacing an air filter may range from $20 to $50. Labor costs at auto repair shops can vary between $80 and $150 per hour, so the total repair bill could range from $150 to $600 or more. It is advisable to check with local auto repair shops for more accurate pricing based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0102 2004 Infiniti G35

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0102 2004 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0102 on a 2004 Infiniti G35?

Symptoms may include a lack of power, rough idling, stalling, poor fuel efficiency, and possibly even a Check Engine light.

2. What does the OBDII code P0102 "Mass or Volume Air Flow Circuit Low Input" mean on a 2004 Infiniti G35?

This code indicates that the Engine Control Module (ECM) has detected a lower than expected voltage from the Mass Air Flow (MAF) sensor.

3. What are the potential causes of OBDII code P0102 on a 2004 Infiniti G35?

Common causes include a faulty MAF sensor, a dirty or contaminated MAF sensor, a vacuum leak, damaged intake air duct, or issues with the wiring or connectors.

4. How can I diagnose the OBDII code P0102 on my 2004 Infiniti G35?

Diagnosis typically involves checking the MAF sensor for dirt or debris, inspecting the air intake system for leaks, testing the sensor's voltage output, and examining the wiring and connectors for any damage.

5. Can a dirty air filter cause OBDII code P0102 on a 2004 Infiniti G35?

Yes, a dirty or clogged air filter can disrupt the airflow to the MAF sensor, leading to inaccurate readings and potentially triggering the P0102 code.

6. What are some repair tips for fixing OBDII code P0102 on a 2004 Infiniti G35?

Try cleaning the MAF sensor with MAF sensor cleaner, inspect and replace the air filter if necessary, check for vacuum leaks, and ensure all connections are secure.

7. Is it safe to continue driving with OBDII code P0102 present on a 2004 Infiniti G35?

It is not recommended to drive with this code unresolved, as it can lead to poor engine performance and potentially cause further damage if left unattended.

8. Can resetting the ECM clear OBDII code P0102 on a 2004 Infiniti G35?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the ECM detects the problem again.

9. How much does it typically cost to repair OBDII code P0102 on a 2004 Infiniti G35?

The cost of repair can vary depending on the exact cause of the code, but it could range from a simple DIY fix with cleaner to a more involved repair involving sensor replacement or professional diagnostics.

10. Can a bad O2 sensor trigger OBDII code P0102 on a 2004 Infiniti G35?

While a faulty O2 sensor is not a common cause of P0102, it can contribute to incorrect air/fuel mixture readings, which may indirectly affect the MAF sensor and trigger the code.

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